BlackAttackGangbang is a good site if you're looking for one thing - white chicks taking big, black cock. Saddle yourself up as these ladies ride black studs in no-holes-barred group action. It's nasty and it's raw. There's sucking, screwing, creampies and facials. You will even see ladies sipping sperm-filled martini glasses as if they're enjoying a Mochatini.
The site has 64 videos to download in Windows Media and MPEGs clips. You will always find one option for each of the vids that gives you good-quality playback. Still, considering many scenes last 40 minutes or longer, it is a bit of a pain to have to download multiple partial scenes to get the complete movie. You can always stream them instead.
I don't know what "gangbang" means to you, but to me, I envision more than a three-way. I find that in some scenes, the lady is done by only two fellows for most of the action. A third and even a fourth schlong might appear at the end for a messier climax. However, in some scenes, the gal is tag-teamed by four or more schlong throughout the footage.
You will find that only some vids come with actual photos. In fact, it's only about a third, because there are 22 photo sets. They have average-res images you can watch in a hands-free slideshow, but there are no Zip files. I appreciate being able to see some of these interracial matchups in more details and for the rest you can always check out vid caps.
There have been no updates in ages, but you do get 53 full-access bonus sites. They have some overlapping scenes among them though. All the same, there are tons of additional movies to download and some even have interracial sex. This site is not quite worth it on its own, but its bonus network makes it worthwhile.